JNTU Kakinada B-Tech 4-1 NANO TECHNOLOGY (Open Elective) R13 March 2018 Question Paper

IV B.Tech I Semester Supplementary Examinations, February/March – 2018
NANO TECHNOLOGY (Open Elective)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****
PART ?A (22 Marks)
1. a) Distinguish between nanoscience and nanotechnology. [4]
b) Explain the typical electrical properties of nanomaterials. [4]
c) What are the advantages of bottom-up synthesis methods? [4]
d) Write about the principle of AFM. [3]
e) What are the unique characteristics of carbon nanotubes? [4]
f) Explain the carbon allotropes. [3]

PART ?B (3×16 = 48 Marks)
2. a) Explain why the materials change their behavior at nano level. [8]
b) What could be the futuristic applications of nanotechnology? [8]

3. Write about the mechanical properties of nano materials. Make a generic
comparison of mechanical properties of carbon nanotubes with those of steel.
[16]

4. a) Discus the principle and applications of sol gel method. [8]
b) What are the requirements for realizing semiconductor nano structures? [8]

5. a) What is the purpose of TEM? Explain its principle. [8]
b) Explain the principle of Raman spectroscopy. [8]

6. a) Discuss the typical properties of graphene. [8]
b) How do you synthesis carbon nanotubes? [8]

7. a) What are the applications of quantum dots? Explain in detail. [8]
b) What are the potential effects of nanomaterials to environment? [8]

Code No: RT41036
RT42211
Set No. 1
R13
1 of 1